碳化温度对CNTs/La3+共掺杂TiO2纳米纤维光催化性能的影响

Effect of calcination temperature on photocatalytic performance of CNTs/La3+ doped with TiO2 nanofibers

通过静电纺丝和高温碳化制备了CNTs/La3+共掺杂TiO2纳米纤维,研究了碳化温度对纳米纤维光催化性能的影响。通过SEM、BET、FTIR、XRD和UV-Vis对纳米纤维的形貌、晶型、成分和光催化性能进行了观察和分析。研究结果表明,碳化对纳米纤维的表面形貌有显著的影响;随着碳化温度的升高,纳米纤维的比表面积随之增加,碳化温度对纳米纤维中TiO2的晶型也有显著影响;当碳化温度为500℃时,纳米纤维光催化性能最佳。

The TiO2 nanofibers doped with La3+and CNTs are prepared by electrospnning and high-temperature calcination. The research is carried on the relation between calcination temperature and photocatalytic properties. The morphology, crystal structure,composition of nanofibers and photocatalytic properties are observed and analyzed by SEM, BET, FTIR, XRD and UV-Vis. The results showthat calcination has a significant effect on the surface morphology of nanofibers. With the increase of calcination temperature, the specificsurface area of nanofibers is also increased. The calcination temperature has a significant effect on the crystal structure form of TiO2 in nanofibers. The photocatalytic performance of nanofibers is the best when the caclination temperature is 500℃.